Solve using substitution.
y = 8x + 7
y = -8x - 9

(-1,-1)

Step-by-step explanation:

1) since both equations are equal to y, we can substitute the value of "y" in one equation to the value of y in another:

8x+7=-8x-9

combine like terms:

8x+8x=-7-9

16x=-16

x=-1

now substitute "x" as -1

8(-1)+7=-1

hence

x=-1

y=-1

so (-1.-1)

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula